I am having a problem with capturing video with any capture card. I have tried 3 different capture cards in to different os. The cards i have tried are Hauppage wintv, some unbranded card and my recent card ATI tv wonder ve. The problem is that my comp locks up at random times during a capture, meaning a hard restart. I have tried generic drivers and brand drivers. Can anybody help.
p.s My comp crashes using any capture programs (e.g Power vcr II, Freevcr, AVI IO, show shifter, vdub, adobe premiere etc)

850 mhz duron
256mb ram
30 gig hd 5400rpm
nvidia geforce 2mx 200
Jetway 663as pro mobo
ati tv wonder ve